With the admin user I can do everything, add, delete, modify, etc. As it should be.
Then using this user added a new one, with full access to sales and accounting options as some other ones needed for sales operations. Then tried to add a new supplier and it throws a warning:
Access Denied
The requested operation cannot be completed due to security restrictions.
Please contact your system administrator.
(Document type: Pricelist, Operation: read)
Tested all the possible combinations on user rights and ended up giving full access to all options. Nevertheless I'm unable to create any new contact/customer/supplier/etc with this user. I'm running out of options, I don't know what else to test or where to look.
EDIT
Got an answer on the brand new OpenERP discussion site recommending to uncheck the Portal user rights for the user. Uncheking it partially worked. The warning still appears but when I click OK, fill the supplier and save, the new supplier is added without errors. Any recommendation?
Is a reported bug that seems to be related to multi-company option selection and user rights.
Go to multi company Access Denied Document type: Partner, Operation: read where the bug was reported and is followed up by other users. Hope a patch is created soon.